parasite vs parasitic

parasite is a noun but parasitic is not a noun.

Word	Noun	Adjective	Verb	Adverb
parasite	Yes	No	No	No
parasitic	No	Yes	No	No

parasite (noun)	parasitic (noun)
an animal or plant that lives in or on a host (another animal or plant); it obtains nourishment from the host without benefiting or killing the host
a follower who hangs around a host (without benefit to the host) in hope of gain or advantage

parasite (adjective)	parasitic (adjective)
	of or pertaining to epenthesis
	relating to or caused by parasites
	of plants or persons; having the nature or habits of a parasite or leech; living off another